/**
 * Copyright 2011 Brigham Young University
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package edu.byu.nlp.ml;

import java.util.Arrays;

import org.apache.commons.math3.random.RandomVectorGenerator;

/**
 * @author robbie
 *
 */
public class RandomVectorGenerators {

	// Uninstantiable
	private RandomVectorGenerators() {}
	
	public static RandomVectorGenerator zeroes(final int dimension) {
		return new RandomVectorGenerator() {
			@Override
			public double[] nextVector() {
				return new double[dimension];
			}
		};
	}
	
	public static RandomVectorGenerator copyOf(final double[] vector) {
		return new RandomVectorGenerator() {
			@Override
			public double[] nextVector() {
				return Arrays.copyOf(vector, vector.length);
			}
		};
	}
}
